Hi, I've read tons of helpful material here on poolforum and also on the poolsolutions website. My problem is that I have high chlorine but algae is growing in my pool. After doing some research I've determined my stabilizer is too high and I would need over 8ppm chlorine to kill algae (based on the Best Guess Chlorine Calculator)

Here are my test results:
Free Chlorine: 4ppm
Total Chlorine: 4ppm
ph: 7.5
Hardness: 270ppm
Alkalinity: 90ppm
CYA: 100ppm

My question is can I reduce the CYA? Or is my only option to stop using pucks and wait? (how long would that take?) In the meantime, should I kill algae by increasing chlorine levels to over 8ppm? Or just let the algae get out of control until the CYA comes down and my chlorine starts working?

Help!

Gary